RETAIL SECURITY TAG

摘要

A security tag or device for use with a product package. The security tag has an optical sensor that is calibrated to an intensity of ambient radiation (or light, if any) within the package interior (e.g., from a source outside the package). The optical sensor can be aligned with an opening in the package to detect light. After calibration, a controller is used with optical sensor to determine changes in detected ambient radiation within the package, and rates of those changes. The security tag has an alarm adapted to provide an alert when a predetermined change in ambient radiation within a package is detected. Alternatively, the security tag can have an arm, with the optical sensor thereon, that extends from its housing for insertion into the package. A receiving opening can optionally be provided in the package for receipt of the arm.

主权项

1. A security tag for a package comprising:
a housing with a battery therein; an optical sensor on the housing configured to detect an intensity of ambient radiation within the package; a circuit connecting the battery and the optical sensor; an alarm or indicator further connected to the circuit and adapted to provide an alert; and a controller configured to control the alarm or indicator based on detections by the optical sensor, wherein the optical sensor is calibrated upon attachment of the housing to the package based on ambient radiation detected within the package, and wherein the optical sensor is configured to detect the changes of intensity of the ambient radiation within the package to activate via the controller the alarm or indicator and provide the alert.